JP3005100B2 - Terminal device for heat ray sensor of remote monitoring control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal for a heat ray sensor of a remote monitoring control system.

[0002]

2. Description of the Related Art FIG. 2 shows a remote monitoring and control system for lighting control using a terminal 2 for a heat ray sensor. In this system, a control line 4 is connected to a transmission line 4 composed of a pair of lines from a base unit 1. The terminal 3 for heating and the terminal 2 for heat ray sensor are connected, and the control terminal 3 is connected to a load 5 such as lighting and air conditioning equipment. The AC power supply AC is for obtaining a power supply for the load 5 and the master unit 1.

[0003] The operation of the time division multiplex transmission of this system will be described based on the transmission signal shown in FIG. 3. A transmission signal Vs having a format as shown in FIG. The control terminal 3 and the heat sensor terminal 2 are controlled. That is, the transmission signal Vs includes a start pulse ST indicating the start of signal transmission, mode data MD indicating a signal mode, address data AD, control data CD for controlling a load, checksum data CS for detecting a transmission error, and a return signal. Is a multipole (± 24 V) time division multiplexed signal composed of a signal return period WT for setting a return period of, and data is transmitted by pulse width modulation.

In the control terminal 3 and the heat sensor terminal 2, the transmission signal Vs received through the transmission line 4 is transmitted.
When the address data AD of the transmission signal Vs coincides with its own address set in advance, the control data CD of the transmission signal Vs is taken in, and the return signal is transmitted in synchronization with the signal return period WT of the transmission signal Vs. The signal is transmitted as a short-circuit between the transmission lines 4 via an appropriate low impedance.

[0005] On the other hand, the master unit 1 is provided with a dummy signal transmitting means and an interrupt processing means. The dummy signal transmitting means always transmits a transmission signal Vs in which the mode data MD is set to the dummy mode. Further, when the interrupt signal Vi as shown in FIG. 3 (b) is returned, the interrupt processing means transmits a return signal (not shown) from the heat sensor terminal 2 or the monitoring terminal 2a which has generated the interrupt signal Vi. ) . That is, the heat sensor terminal 2 sends an interrupt signal Vi in accordance with the change of the heat ray sensor. In response to the interrupt signal Vi, the base unit 1 transmits a transmission signal Vs for address search for each group address in order to search for the interrupted thermal sensor terminal 2. The interrupted heat sensor terminal 2 returns its own unique address as a reply signal when the group to which it belongs is accessed. By this reply, the master unit 1 can determine the interrupted thermal sensor terminal 2 and then transmit the transmission signal Vs having the address data AD of the thermal sensor terminal 2 to transmit the thermal sensor terminal 2. 2 is accessed and the status of the heat ray sensor connected from the heat sensor terminal 2 is returned as a return signal.

[0006] Based on the reply signal returned from the heat sensor terminal 2 in this way, the master unit 1 sends a signal to the control terminal 3 that controls the load 5 corresponding to the heat sensor terminal 2. The load 5 is controlled by creating the control data CD and transmitting the transmission signal Vs including the control data CD to the control terminal 3 through the transmission line 4 in a time division multiplex manner.

FIG. 4 shows a configuration of a heat ray sensor section of a conventional heat ray sensor terminal 2. In this conventional example, a heat ray emitted from a human body is transmitted to a heat ray sensor 7 composed of a pyroelectric element via a Fresnel lens 6. The light is collected and the output of the hot-wire sensor 7 is amplified by an amplifier circuit 8 and compared with a reference value set by a comparator 9. When the output exceeds the reference value, the signal is sent to the control unit 10 of the terminal device as a human body detection signal. It is taken in as a monitoring input.

[0008]

Since the heat ray sensor 7 conventionally used is not an area sensor, the detection area is determined by the structure of the Fresnel lens 6 for condensing the heat ray. Therefore, the detection area cannot be set in the circuit after the heat ray sensor 7, and when the detection area is changed, means such as replacing the Fresnel lens 6 or attaching an infrared filter is required.

The detection level is set by changing the gain of the amplifier circuit 8 or the reference value of the comparator 9 with the variable resistor VR. However, the detection level of each detection area cannot be changed. The present invention has been made in view of the above problems, and an object of the invention described in claim 1 is to freely change a detection area by transmitting setting data from an external function setting device via a wireless signal medium. An object of the present invention is to provide a terminal for a heat ray sensor of a remote monitoring and control system which can be changed and a detection level can be freely changed by transmitting setting data from an external function setting device by a wireless signal medium for each detection area.

A second object of the present invention is to provide a terminal for a hot-wire sensor of a remote monitoring and control system capable of confirming setting data with an external function setting device in addition to the above object.

[0011]

In order to achieve the above object, according to the first aspect of the present invention, a master unit is connected to a monitoring and control terminal to which a unique address is set by a pair of transmission lines. Then, the base station transmits a transmission signal for transmitting a control data signal for controlling a load by appropriately accessing each terminal device, and transmitting a return signal based on the monitoring data from the terminal device, thereby controlling the control data and monitoring. A multiplex transmission / reception unit that is used in a remote monitoring and control system that multiplexes data and that receives a transmission signal and transmits a return signal to and from a master unit, and a heat wire that collects heat rays radiated from the human body Lens, a hot-wire area sensor that converts the collected hot-wires into electrical signals, detection means that detects the human body from the output signals of the hot-wire area sensor, and equipment for determining the functions and operations of the terminal itself. A non-volatile memory for storing data, data receiving means for receiving setting data transmitted from the external function setting device via a wireless signal medium, and processing for storing the setting data received by the data receiving means in the non-volatile memory; Read processing of setting data stored in the non-volatile memory, data processing of transmission signals received by the multiplex transmission / reception unit, processing of detection data of the detection means, control processing such as creation of a reply signal returned from the multiplex transmission / reception unit And a control unit for performing the detection, the detection area of the hot-wire area sensor,
The detection level can be changed freely based on setting data from an external function setting device.

According to a second aspect of the present invention, in the first aspect of the present invention, there is provided a data transmitting means for transmitting the setting data stored in the non-volatile memory via a wireless signal medium, in response to a confirmation instruction from an external function setting device. Thus, the setting data can be transmitted from the data transmitting means.

[0013]

According to the present invention, since the hot-wire area sensor is used, a detection area divided by the hot-wire area sensor itself can be provided, and the detection area can be selected and set by the external function setting device. Data can be set freely, and the detection level for each detection area can be set freely by setting data from an external function setting device. Therefore, the setting of the detection area and detection level can be changed freely according to the installation conditions of the terminal. .

Since the setting data can be sent from the external function setting device via a wireless signal medium, adjustment after installation can be easily performed. It has a data transmitting means for transmitting the setting data stored in the non-volatile memory via a wireless signal medium, and enables the setting data to be transmitted from the data transmitting means in response to a confirmation instruction from the external function setting device, thereby enabling external functions. The settings can be checked on the setting device.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in FIG. The terminal for a heat sensor shown in FIG. 1 uses a heat ray area sensor 11 to convert a heat ray emitted from a human body into a heat ray lens 1.
7, a light ray image is focused on the light receiving surface of the heat ray area sensor 11 to form a heat ray image. Analog processing unit 1
2 amplifies the sensor output of each detection area of the divided hot-wire area sensor 11 and compares it with the detection level of each detection area stored in the non-volatile memory 13 composed of an EEPROM. In such a case, a detection signal in the detection area is output to the control unit 14.

The non-volatile memory 13 stores the setting data of the detection area and the setting data of the detection level, and also stores the unique address and the function data of the terminal. The stored setting data is transmitted from the external function setting device 15 by a wireless signal medium such as an optical signal or a radio signal (an optical signal by infrared light in the embodiment). The transmitted setting data is Transmission / reception processing unit 1
The received data is stored in the nonvolatile memory 13 under the control of the control unit 14.

When a confirmation command is sent from the external function setting unit 15 by a wireless signal medium, the control unit 14 reads the setting data stored in the non-volatile memory 13 based on the confirmation command, and executes the transmission / reception processing. The signal is transmitted by an optical signal which is a wireless signal medium through the unit 16. The external function setting device 15 is capable of transmitting and receiving a wireless signal medium, has a key for inputting setting data and a command, and has a display (not shown) for displaying the setting data transmitted from the terminal device side. ).

The control unit 14 is a multiplex transmission / reception unit 18 shown in FIG.
And a function for performing data processing and control of the entire terminal such as a function for determining data of a transmission signal transmitted from the base unit 1 via the transmission line 4 and a function for creating data of a reply signal to be returned. The detection signal output from the analog processing unit 12 as described above is stored in the nonvolatile memory 1.
Only the detection area set based on the setting data of the detection area set in No. 3 is made valid, and if there is a valid detection signal, it is returned to the base unit 1 by a reply signal as a monitor input as a monitoring input. It has become.

That is, by selectively setting a detection area in which a detection signal is valid, a detection area according to the installation state can be set. If the setting of the detection area in the external function setting device 15 is patterned, the detection area setting can be further facilitated.

[0020]

According to the first aspect of the present invention, as described above, since the hot-wire area sensor is used, it is possible to have a detection area divided by the hot-wire area sensor itself. The setting of the detection level for each detection area can be performed by the setting data from the external function setting device, and the setting of the detection area and the detection level can be changed according to the installation conditions of the terminal device. Can be adjusted freely, and the setting data is sent from an external function setting device via a wireless signal medium, so adjustments after installation can be easily performed. In addition, there is no need to prepare terminals of each type corresponding to the installation conditions. There is an effect that the down can be achieved.

According to a second aspect of the present invention, there is provided a data transmitting means for transmitting the setting data stored in the non-volatile memory by a radio signal medium, and the setting data is transmitted from the data transmitting means in response to a confirmation instruction from the external function setting device. Since it can be sent,
There is an effect that the setting contents can be confirmed with the external function setting device.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram showing one embodiment of the present invention.

FIG. 2 is a configuration diagram of a remote monitoring control system.

FIG. 3 is an explanatory diagram of a transmission signal.

FIG. 4 is a configuration diagram of a conventional heat ray sensor unit.

[Description of Signs] 2 Terminal device for hot-wire sensor 11 Hot-wire area sensor 12 Analog processing unit 13 Non-volatile memory 14 Control unit 15 External function setting unit 16 Transmission / reception processing unit 17 Lens for hot-wire 18 Multiplex transmission / reception unit

Claims (2)

(57) [Claims] 1. Control data for controlling a load by connecting a master unit and a monitoring and control terminal device to which a unique address is set by a pair of transmission lines, and appropriately accessing each terminal device from the master device. It is used in a remote monitoring and control system that multiplexes control data and monitoring data by transmitting a transmission signal for transmitting a signal and transmitting a reply signal based on the monitoring data from the terminal device. A multiplex transmission / reception unit that receives a transmission signal and transmits a return signal between the lens, a hot-wire lens that collects heat rays radiated from the human body, and a hot-wire area sensor that converts the collected heat rays into electric signals. A detecting means for detecting a human body from an output signal of the hot-wire area sensor, a non-volatile memory for storing setting data for determining the function and operation of the terminal itself, and a radio signal from an external function setting device. Data receiving means for receiving setting data transmitted by the body, the process of storing the setting data received by the data receiving means in the non-volatile memory, the process of reading the setting data stored in the nonvolatile memory,
Data processing of the transmission signal received by the multiplex transmission / reception unit,
A control unit that performs control processing such as processing of detection data of the detection means and creation of a reply signal to be returned from the multiplex transmission / reception unit, and sets the detection area and detection level of the hot-wire area sensor to the setting data from the external function setting device. A terminal for a heat ray sensor of a remote monitoring and control system, wherein the terminal can be freely changed based on the information. 2. A data transmission means for transmitting setting data stored in a non-volatile memory by a wireless signal medium, wherein the setting data can be transmitted from the data transmission means in response to a confirmation instruction from an external function setting device. The terminal device for a heat ray sensor of the remote monitoring control system according to claim 1, wherein